If your adult aged kids and their friends are still going boating with you (good for you btw) then you will probably need something in the 140' range


, even a 46 footer can get small with a crowed like that.
Rod, I have a 2004 B473 - you may remember it, maybe even been on it. It was a blue hulled yacht on C jetty at Mindarie. You verified the HIN for rego transfer after I sailed her back from Brisbane about 5 years ago.
My boat has some miles on her. It has circumnavigated and has several ARC plaques displayed so has crossed the Atlantic a few times, and even though I myself was mostly coastal on my delivery trip to Perth, she provided a safe, warm and (mostly) dry place to huddle when things got a little sporty. Of the boats you have listed above, I am a (maybe biased) advocate of the 473.
Don't be put off by the anti production boat, fin keel hype. The only issue I have with the boats you have mentioned (and its more a factor of their draft than build) is you'll always be the boat out the back... Especially at Rottnest where a 2m draft will keep you out on the back moorings


Happy to answer any specific questions you may have.